CMR in Mastiffs is an autosomal recessive disease, so the gene mutation is
inherited from both sire and dam. By utilizing OptiGen's CMR DNA
test and following their breeding recommendations, breeders can use dogs in their
breeding program regardless of the dogs' CMR genetic status and at the same time work
to eliminate the disease from the Mastiff gene pool.

PLEASE NOTE: most of the information about each stud dog
is provided by the dog's owner and is not verified. Much of the
data provided is subjective and is based on the owner's experience
and unique perspective.This section contains a list of mastiff stud dogs ordered
by the country and state that the owner lives in. There is a hypertext
link to a detailed page for each dog.
In the three-generation pedigrees, dogs' names in bold
have OFA clear hips and dogs' names that are in italics
have OFA clear elbows. Published offspring and siblings appear
in an AKC Stud Book, AWARDS, OFA list, and/or CERF list.